var express = require('express');

var router = express.Router();

var Category = require("../models/Category");
var Content = require("../models/Content");
var data;

//处理通用数据
router.use(function (req, res, next) {
    data = {
        userInfo: req.userInfo,
        categories: [],
    }
    Category.find().then(function (categories){
        data.categories = categories;
        next();
    })
})


router.get("/", function (req, res, next) {
    //res.send('首页')

        data.category= req.query.category || '';
        data.count= 0;
        data.page= Number(req.query.page) || 1;
        data.limit= 2;
        data.pages= 0;

    var where = {};
    if (data.category) {
        where.category = data.category
    }
    //读取所有的分类信息

    // Category.find().then(function (categories) {
    //     // 分类
    //     data.categories = categories;
    //     //
    //     return Content.where(where).count()
    // }).then(function (count) {})

    Content.where(where).count().then(function (count) {
        data.count = count;
        // 计算总页数
        data.pages = Math.ceil(data.count / data.limit);
        //取值不能超过pages
        data.page = Math.min(data.page, data.pages);
        // 取值不能小于1
        data.page = Math.max(data.page, 1);
        var skip = (data.page - 1) * data.limit;


        return Content.where(where).find().sort({_id: -1}).limit(data.limit).skip(skip).populate(['category', 'user']).sort({
            addTime: -1
        })

    }).then(function (contents) {
        data.contents = contents;
        // console.log(data);
        res.render("main/index", data);
    })


})
router.get("/view", function (req, res) {
    var contentId = req.query.contentid || '';
    Content.findOne({
        _id: contentId
    }).then(function (content) {
         data.content =content;
         content.views++;
         content.save();
         res.render('main/view',data)
    })
})


module.exports = router;